piwigo/random.php

<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery                           |
// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch        : BSF (Best So Far)
// | file          : $RCSfile$
// | last update   : $Date$
// | last modifier : $Author$
// | revision      : $Revision$
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

// +-----------------------------------------------------------------------+
// |                          define and include                           |
// +-----------------------------------------------------------------------+
define('PHPWG_ROOT_PATH','./');
include_once( PHPWG_ROOT_PATH.'include/common.inc.php' );
// +-----------------------------------------------------------------------+
// |                     generate random element list                      |
// +-----------------------------------------------------------------------+

// we must not show pictures of a forbidden category
$where = '';
if ( $user['forbidden_categories'] != '' )
{
  $where = 'WHERE category_id NOT IN ('.$user['forbidden_categories'].')';
}

$query = '
SELECT DISTINCT(id)
  FROM '.IMAGES_TABLE.'
    INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
  '.$where.'
  ORDER BY RAND(NOW())
  LIMIT 0, '.$conf['top_number'].'
;';
$result = pwg_query($query);
$ids = array();
while ($row = mysql_fetch_array($result))
{
  array_push($ids, $row['id']);
}
// +-----------------------------------------------------------------------+
// |                                redirect                               |
// +-----------------------------------------------------------------------+
$url = PHPWG_ROOT_PATH.'category.php?cat=list&amp;list='.implode(',', $ids);
redirect($url);
?>